7th Grade Review

Front

What is an unlikely event in probability?

Back

An unlikely event is an event that has a low probability of occurring, but it is not impossible. For example, spinning a multiple of 3 on a spinner with numbers 1-10 may be unlikely if there are fewer multiples of 3.

Front

How do you solve the inequality -4x + 14 ≤ 54?

Back

To solve the inequality, first subtract 14 from both sides: -4x ≤ 40. Then divide by -4 (remember to flip the inequality sign): x ≥ -10.

Front

What is the sale price of an item that is regularly priced at $600 with a 20% discount?

Back

To find the sale price, calculate 20% of $600, which is $120. Subtract this from the original price: $600 - $120 = $480.

Front

What is the probability of rolling a 4 on a die?

Back

The probability of rolling a 4 on a standard die is 1/6, since there is one favorable outcome (rolling a 4) out of six possible outcomes.

Front

What is the probability of rolling a number less than 3 on a die?

Back

The numbers less than 3 on a die are 1 and 2. Therefore, the probability is 2/6 or 1/3.

Front

If the probability of an event is 30%, what is the probability that it will not happen?

Back

The probability that it will not happen is 100% - 30% = 70%.

Front

What is a multiple of 3?

Back

A multiple of 3 is any number that can be expressed as 3 times an integer. For example, 3, 6, 9, and 12 are multiples of 3.

Front

What does it mean to solve an inequality?

Back

Solving an inequality means finding the range of values that satisfy the inequality condition. For example, in -4x + 14 ≤ 54, we find the values of x that make the inequality true.

Front

What is the formula to calculate a percentage discount?

Back

To calculate a percentage discount, use the formula: Discount = (Discount Rate / 100) * Original Price.

Front

What is the total number of outcomes when rolling two dice?

Back

When rolling two dice, the total number of outcomes is 6 (from the first die) multiplied by 6 (from the second die), which equals 36.